Q4097 I am using the S7NT protocol and I want to use the
maximum block size for the driver. How?

There are four protocols that are
available to choose from according to your device: S7NT, S7NT300
and S7NT400 from the S7NT driver version 2.06.05.001RB. The maximum
block size of the protocols are set to 512, 1776 and 1904 bits
respectively to boost performance of the system.

S7NT is compatible with all devices, so the block size is set to
the lowest.

The changes are at the IO device level, therefore, the different IO
device can be used on the same IO port.